Sound-reproducing or talking machine.



A. P. GUSTAFSON.

Patented Dec. 10, 1918.

2 SHEETS-SHEET 1.

16 "i A /7 T 1 zzlfizesaea" aw/02%;;

A. P, GUSTAFSON.

SOUND REPRODUCiNG OR TALKING MACHINL APPLICATION HLED APR.29,1916.

Patented Dec. 10, I918.

2 SHEETS-SHEET 2/ ted. ig. 3 is a View sinniz to s on j gg g' ggg necificauon 01 new c1 5 Pater? Application filed 5pm 25, 1918. S21

T Z? cm, may inc; and the rear edge of which is in con- Be icknownthat Li-iocmqi Gus'ixwsoz-z. tact Hill the rear portion of ihe bottom a, citizen or the Uniiedup ta es, and a resident vali rroni this point, the arti;

.c ion e oi {Jilill I 20.11111 :2 1nd State of tends upwardly ainl forwardly So a point .ilhnois, have invent z W d u -2lLljt-1Uili' Ihe upger cdgo of ihe opcn ii'Olib i ul Improvements i roducing of (he Talking e ir'olloniing The rcar conduit sc'iion l5 inc inecl is a fnii, clees an? enact description. downwardly and forwardly "from ti 2 open. The invention relate "o ing 13 to an openin 1o formed in the lower ing or rear portion of the partition 14. [he con- (hut section 1.3 fia 111;; and in the preferred form shown, comprises siraight, substan- 11 HHP"OVPD1QH'D tiallv parallel "front and rear Walls 1? and r ra (eci in he pre wii'h firming side walls 1e, so that the flaring i l i 'oliying and mod.

i '11 l I". bl. n cons sis in the Leann hereinafter: set forth, iilust ferr ed form in ECU-( 311: mg (l1 swings conch 1', section is rccl: .lar in section and and o ciculariy p inicd 0- grzuhully ncreases in cross scciional arca pp toward lower end. The opening is is aisc- In preferahiy r r ingular and corrcspomls in tion size to the lower end of the conduit section bqd i 53. should he noted that the axes of the SUZ1GD on c i 7 i inner and outer coiuluit sections are suhicicle. i 21 '"taniiialli at r anglcs to ca h oher and i z 1 ear 1) 1 f the bo'lliann wali 2 noclification. i ain con o duit sec ion cx'iends abruptly or ireii -awa 11 ,s 111011? 1 0; opening" n; of The rcar 5 i ,onduit scztions and at a sharply with ih acute angle to the plane of such opening.

Ammo motm no. soun .th this nrrzngcmcnt, the sound waves oHGCOIiS RU'StiOH shown, j passing from the rear conduit section strike rectangular in form and co abruptly upon the rear portionof the botbottom W2 and 2. "icle n'a is tom \dil 2 of on main conduit section and wail an l open from oral are rhe-rchy rciieci'ed upwamlly against the by laiiice. or screen 1 iranie or plane inclined upper wall 1% which is disposed at Sis monnied upon the Sop wall 3 over a. such an angle that if reflects the sound waves g'e opening '7 ahcrcin and. ca Ties a rotaiforwardly through rhc open front of the cusing turn i lhl or rccorr suppoix. 8 above the mg. This arrangement of the amplifying top wall 1 and a turn trbie actuating motor 9 conduit acts cfi ecfivciv to increase the vol below the top wall inc. ii i'thin the upper por nine and resonance of the sound produced.

' To vary the intensity of the sound proreoroducer 10 is mount ucei a shutter is arranged within the coin aging sounc, ho); arm and is orefcrabiy disposed Within iiiie i is mounted ii any suitable l i tic r ar conduit sec ion manner upon a. SHPQOlc 1-3 that is fired to 1:). s shown. the shnter 19 isrcctamfuhrr he upper rear iortion of the casin over in oi lliand 11 wifhin the lower portion the top Wali 1. 0' he conduit section 15. A cloth or lifying conduit is arranged lent 20 connects the upper forward I mui comprises a rear secedge or the shurrer 1c the front Wall 0" the J fnwarrlly from the open conduit ano the shutter is arranged to suing rd nain section extenf to and froin the hack Wall thereof to modify the sound produced. A horizonl'al rock shaft 21 is jo irnaled ativ-s outer end inone or ixhe side Wall" 3 of she (Wing and, at its inner'end in a hearim 2:2 cal to the outer the conduiig secfaceioi the -front Wail arm 24.

tion 15. At its outer end the shaft 21 is provided with an operating handle 23 and at its inner end with a depending crank A link 25 connected to the crank arni extends through an opening 26 in the front wall of the conduit sect-ion 15 and is connected to a clip 27 on the shutter 19. By means of the handle the shutter can be adjusted to modify the intensity of the sound producer. in its extreme closed position, the free edge of the shutter abuts against the rear wall ofthe conduit section 15, and, in its open position, the shutter closes the opening 26 in the front wall of the conduit section.

In the form shown in Figs. l and 5, the shutter for controlling the sound is in the form of a slide 29. This slide is rectangular in outline, is slightly larger than the opening 10 in the partition 1% and is mounted on the under side of too partition adjacent such opening. The edges of the slide 2!), shown, engage rabbeted guides 30 that are iiXed to the under side of the partition l-i at the lower rear portion. An actuating link 31 is connected to a clip 32 fixed to the slide 29 and extends upwardly and forwardly therefrom to the upper end of a rock arm 33. The latter is mounted at its lower end upon a horizontal rock shaft 3% that is journaied in the side Walls 3 of the casing. The one end of the rock shaft projects and is provided with an operating handle 35 so that the slide can be adjusted, as desired, to extend more or less over the lower end of the conduit, section 15 and thereby modify the intensity of the sound produ ed as desired. The upper face of the slide 19 adjacent the partition 14 is preferably covered with strip 36 of feltci the like which engages the face of the partition 1% with suilicient friction to hold the slide in adjusted posit/ion.

Elie motor which is arranged in the casing above the partition ll and in front of the conduit section 15 be of any suitable construction. Preferably, a spring motor is used and is adapted to be wound up by the projecting crank 37. The sound box and sound box arm may be of any suit-able construction. The casing if desired, may i'orm'the upper portion or" a cabinet, the lower portion of which is used for storing records. and an upper lid may be provided to inclose the turn table and reproduccr.

Obviously, other changes may be made without departure from the essentials of the invention as defined in the claims.

I claim as my invention 1. In a talking machine. the combination with a casing, of a. sound amplifying conduit within said casing wardly and forwardly inclined, inner sec ticn and an outer section opening at the front of the casino; and having an upwardly CO lilDllSlIl. a down" and forwardly inclined axis substantially at right angles to the axis of said inner section and said outer section having a bottom wa l, the rear portion of which extends across the mouth or opening at the loWer end of said inher section at a sharply acute angle to the plane thereof and fOllllS tL refleeting sip-race for directing the sound waves from said inner section against the upper wall of said outer sect-ion, substantially as described.

2. In a talking machine, the combination with a casing, of a sound amplifying conduit within said casing comprising a down- \vardly and forwardly inclined, inner section and an outer section opening at the front of the casing and having an upwardly and form dly inc-lined aXis substantially at right angles to the axis of said inne section and said outer section having a bottoin' wall, the rear portion of which extends across the mouth or opening att-lie lower end of said inner section at a sharply acute angle to the plane thereof and forming a reflecting surface for directing the sound waves from said inner section againstthe upper "all of said outer section and a sound modulating shutter movable across said conduit adjacent the juncture of said conduit sections, for varying the area of the sound waves projected onto said reflecting surface, substantially as described.

3. In a talking machine the combination with a. casing, of sound amplifyingconduit Within said casing comprising a down Wardly and forwardly, inclined inner section and an outer section substantially rectangular in cross section and opening at the front, of the casing, said outer section having an upper wall upwardly and forwardly inclined from the lower end or mouth of mid inner section and. a substantially horizontal lower wall, therear portion of which extends across the mouthor opening at the lower end of said inner section at aelicrply acute angle to the plane of said openingand forming a reflecting surface for directing the sound waves upwardly against said in' clined upper Wall, substantially as described.

4. In a talking machine, the combination of a casing opening at its front, a partition in said casing inclined upwardly and forwardly from the rear portion of the lower horizontal Wall '0; said casing and forn'iing therewith a main amplifying conduit sub stantially rectangular in cross section and haying an upwardly and forwardly inclined axis, said partition having an opening at its lower rear portion, a flaring inner conduit section inclined downwardly and forwardlv from the upper rear portion of said casinig at substantially right angles to the axis of said main conduit and communicating with said opening, whereby the sound waves projected from said inner conduit section are I reflected by the rear portion of se'if; lower horizontal wall upwardly against said inclined partition, substantially as described. 7 5. 1;- o talking machine, the combination of a casing opening at its fronh intimation in said casing inclined upwardly forwardly from the rear portion of the lower horizontal Wall of said casing and forming therewith a. main amplifying conduit substantially rectangular in cross section and having an upwardly and forwardly inclined aKis, said partition having; an opening at its lower rear portion, a flaring conduit section inclined downwardly and forwardly from the upper rear Portion of said cssing at substantially right angles to the axis of said main conduit and communicating with said opening, whereby the sound W&V6S projected from said inner conduit section are reflected by the rear portion of said lower horizontal Wall upwardly against said inclined partition, and Zen adjustable sound modulating shutter movable across the lower end of said inner conduit section for varying the cross sectional area of the sound waves projected from said inner conduit section upon said lower horizontal Wall, substantially is described.

6. In a talking machine, the combination of a casing having an opening at its fi ont a partition in said casing inclined upwardly and forwardly from the rear portion of the lower Wall of said casing and forming therev n v H lower rear portion, a flaring conduit 5 to -ngulai' in cross so tit'on having a rectangular on 11 lower portion, a timing con-nil. inclineddownwanly end fern-o1 not rear portion of said one COll-llllliiilxlft with said onenin s n it duit section '1 or in sec comprising sin I'Gi-ll flan peoducer comni, c, 0' tinv aid conduit section substen .56

talking machine o of a casing; hm on opening at nartition in said cast 0" inclined lower Wall of said casing and ion vith a main nniplifying conduit tiolly rectangular in cross section, s tit-ion having rectangular openin inclined down imrdly forwardly n the upper rear portion of said casing and communicating ivith said opening, said conduit section being rectangular in section and comprising substantially parallel front and. rear Wells and flaring side walls, tectongnlei', adjustable shutter at the lower end of said conduit section, an a ;B1OE'O@J mnnicetingwitii the upp r "llv stantielly es de 

